SE0000697D0 - Method for producing distributed reflectors, as well as such reflectors - Google Patents

Method for producing distributed reflectors, as well as such reflectors

Info

Publication number
SE0000697D0
SE0000697D0 SE0000697A SE0000697A SE0000697D0 SE 0000697 D0 SE0000697 D0 SE 0000697D0 SE 0000697 A SE0000697 A SE 0000697A SE 0000697 A SE0000697 A SE 0000697A SE 0000697 D0 SE0000697 D0 SE 0000697D0
Authority
SE
Sweden
Prior art keywords
reflectors
grating
regions
well
producing
Prior art date
Application number
SE0000697A
Other languages
Swedish (sv)
Other versions
SE515198C2 (en
SE0000697L (en
Inventor
Urban Eriksson
Original Assignee
Altitun Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Altitun Ab filed Critical Altitun Ab
Priority to SE0000697A priority Critical patent/SE0000697L/en
Publication of SE0000697D0 publication Critical patent/SE0000697D0/en
Priority to US10/220,329 priority patent/US6798818B2/en
Priority to PCT/SE2001/000344 priority patent/WO2001065650A1/en
Priority to AU2001236274A priority patent/AU2001236274A1/en
Publication of SE515198C2 publication Critical patent/SE515198C2/en
Publication of SE0000697L publication Critical patent/SE0000697L/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B6/122—Basic optical elements, e.g. light-guiding paths
    • G02B6/124—Geodesic lenses or integrated gratings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
    • H01S5/125—Distributed Bragg reflector [DBR] lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
    • H01S5/0625—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes in multi-section lasers
    • H01S5/06255—Controlling the frequency of the radiation
    • H01S5/06256—Controlling the frequency of the radiation with DBR-structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
    • H01S5/1206—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers having a non constant or multiplicity of periods
    • H01S5/1209—Sampled grating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
    • H01S5/1225—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers with a varying coupling constant along the optical axis

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

A method of producing a distributed reflector that includes a grating, wherein regions (21) are provided in the grating material transversely to the longitudinal axis of the grating, wherein the refractive index in said regions is lower or higher than the refractive index in surrounding parts of the grating, and wherein the distance between mutually adjacent regions (22) is varied. The invention is characterised by giving the regions (21) mutually the same width, and determining the positions of the various regions along the longitudinal axis (X) of the grating in relation to the wavelengths to be reflected.
SE0000697A 2000-03-02 2000-03-02 Method for producing distributed reflectors, as well as such reflectors SE0000697L (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE0000697A SE0000697L (en) 2000-03-02 2000-03-02 Method for producing distributed reflectors, as well as such reflectors
US10/220,329 US6798818B2 (en) 2000-03-02 2001-02-16 Method of producing distributing reflectors, and reflectors provided by the method
PCT/SE2001/000344 WO2001065650A1 (en) 2000-03-02 2001-02-16 A method of producing distributing reflectors, and reflectors provided by the method
AU2001236274A AU2001236274A1 (en) 2000-03-02 2001-02-16 A method of producing distributing reflectors, and reflectors provided by the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0000697A SE0000697L (en) 2000-03-02 2000-03-02 Method for producing distributed reflectors, as well as such reflectors

Publications (3)

Publication Number Publication Date
SE0000697D0 true SE0000697D0 (en) 2000-03-02
SE515198C2 SE515198C2 (en) 2001-06-25
SE0000697L SE0000697L (en) 2001-06-25

Family

ID=20278672

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0000697A SE0000697L (en) 2000-03-02 2000-03-02 Method for producing distributed reflectors, as well as such reflectors

Country Status (4)

Country Link
US (1) US6798818B2 (en)
AU (1) AU2001236274A1 (en)
SE (1) SE0000697L (en)
WO (1) WO2001065650A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017028231A (en) * 2015-07-28 2017-02-02 日本電信電話株式会社 Wavelength variable semiconductor laser

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5621828A (en) * 1992-09-24 1997-04-15 Interuniversitair Micro-Elektronica Centrum Vzw Integrated tunable optical filter
US5379318A (en) * 1994-01-31 1995-01-03 Telefonaktiebolaget L M Ericsson Alternating grating tunable DBR laser
KR0138860B1 (en) * 1994-12-09 1998-06-01 양승택 Semiconductor laser with super structure grating distributed bragg reflector
US5903664A (en) * 1996-11-01 1999-05-11 General Electric Company Fast segmentation of cardiac images
GB9722549D0 (en) 1997-10-24 1997-12-24 Univ Southampton Fabricating optical waveguide gratings and/or characterising optical waveguides
JP3191784B2 (en) 1998-10-29 2001-07-23 日本電気株式会社 Method of manufacturing diffraction grating and method of manufacturing semiconductor laser
SE519155C2 (en) * 1999-02-17 2003-01-21 Altitun Ab Method for evaluation of tunable lasers
US6535623B1 (en) * 1999-04-15 2003-03-18 Allen Robert Tannenbaum Curvature based system for the segmentation and analysis of cardiac magnetic resonance images

Also Published As

Publication number Publication date
WO2001065650A1 (en) 2001-09-07
US20030142717A1 (en) 2003-07-31
US6798818B2 (en) 2004-09-28
SE515198C2 (en) 2001-06-25
AU2001236274A1 (en) 2001-09-12
SE0000697L (en) 2001-06-25

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